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USNM 397487 Empidonax oberholseri LAT
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USNM 342070 Empidonax oberholseri TAG2
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USNM 397487 Empidonax oberholseri VEN
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Page scan of Main Catalog Series: vol.033_168551-168575
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Page scan of Main Catalog Series: vol.032_159651-159675
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Page scan of Main Catalog Series: vol.033_164126-164150
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Page scan of Main Catalog Series: vol.054_272001-272025
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Page scan of Main Catalog Series: vol.010_053276-053300
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Page scan of Main Catalog Series: vol.027_140151-140175
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USNM 397487 Empidonax oberholseri TAG2
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Page Scan of Egg and Nest: vol.05_020476-020500
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Page scan of Main Catalog Series: vol.054_269076-269100
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USNM 397487 Empidonax oberholseri DOR
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USNM 342070 Empidonax oberholseri LAT
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Page scan of Main Catalog Series: vol.093_464831-464855
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Page scan of Main Catalog Series: vol.079_397476-397500
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Page Scan of Egg and Nest: vol.10_046976-047000
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USNM 342070 Empidonax oberholseri TAG1
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Page scan of Main Catalog Series: vol.083_413226-413250
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Page scan of Main Catalog Series: vol.046_228326-228350
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Page scan of Main Catalog Series: vol.031_156026-156050
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Page scan of Main Catalog Series: vol.084_420851-420875
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USNM 342070 Empidonax oberholseri VEN
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USNM 342070 Empidonax oberholseri DOR